需要最適化のための拡張(R, s, Q)ポリシーと確率モデルを用いた実用的なアプローチ
Alva Presbitero1, Andreas Syrén2, Hagop Dippel2
1Zalando, 10243, Berlin, Germany. alva.presbitero@zalando.de.
Scientific reports
|December 19, 2025
まとめ
この研究では、確率的需要予測と在庫ポリシー最適化を統合しています。新しいZalando Eコマースオペレーティングシステム(ZEOS)ツールは、ダイナミックな小売環境における効率と収益性を向上させます。
科学分野:
- オペレーションズリサーチ
- Eコマースロジスティクス
- サプライチェーンマネジメント
背景:
- 需要の変動と複雑なフルフィルメントネットワークのため、効果的な在庫管理はEコマースにおいて極めて重要です。
- 既存の最適化モデルは、しばしば単純化された需要の仮定を使用しており、現実世界の不確実性を捉えきれていません。
- 予測モデリングと実際的な補充決定との間の橋渡しは、主要な課題です。
研究 の 目的:
- 確率的需要予測と高度な在庫ポリシー最適化を統合すること。
- 分散型フルフィルメントと季節的な品揃えのために古典的な[数式:本文参照]ポリシーを拡張すること。
- Eコマース在庫最適化のための実用的なツールを開発すること。
主な方法:
- Zalando Eコマースオペレーティングシステム(ZEOS)在庫最適化ツールを開発しました。
- 確率的勾配ブースティングモデル(LightGBM)を用いたワンショット在庫ポリシー最適化を統合しました。
- [数式:本文参照]ポリシーを分散型ネットワークと季節的な品揃えに合わせて適応させました。
主要な成果:
- 人間のベースラインや古典的なベースラインと比較して、総商品価値(GMV)および履行コスト後のGMVの大幅な向上を達成しました。
- 高い運用可用性([数式:本文参照])および需要充足率([数式:本文参照])を維持しました。
- パーセンタイル目標と12週間の予測期間を持つ確率的予測は、最適なパフォーマンスを示しました。
結論:
- ZEOSツールは、Eコマースのための確率的予測とポリシー最適化の効果的な橋渡しをします。
- このアプローチは、ダイナミックな小売環境における効率を高め、コストを削減し、収益性を向上させます。
- この研究は、複雑な在庫管理の課題に対する先駆的なソリューションを提供します。
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